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একটি স্টেপ আপ ট্রান্সফরমারে, গৌণ কুণ্ডলীর পাকসংখ্যা মুখ্য কুন্ডলীর পাকসংখ্যার দ্বিগুণ। যদি মূখ্য কুন্ডলীকে কোন পরিবর্তী বিদ্যুৎ লাইনের সাথে সংযুক্ত করা হয়, তাহলে মুখ্য কুণ্ডলীর তুলনায় গৌণ কুণ্ডলীতে- (In a step up transformer, the number of turns in the secondary coil is twice to that of primary coil. If you apply an alternating current in the primary coil, then in the secondary coil compared to the primary coil-)
In an iron cored coil the iron core is removed so that the coil becomes an air cored coil. The inductance of the coil will
A certain amount of current flows through a ring shaped coil with fixed number of turns. How does the magnetic induction B varies inside the coil if an iron core is threaded into coil without dimensional change of coil?
A coil of wire is placed in a changing magnetic field. If the number of turns in the coil is decreased, the voltage induced across the coil will
In a D.C. generator in case the resistance of the field winding is increased, then output voltage will
Some wire- wound resistors have bifilar winding. This type of winding is used to
________ cooling is the process of dissipating the armature and field winding losses to a cooling medium circulating within the winding insulation wall
A 4 pole generator with 16 coil has a 2-layer lap winding. The pole pitch is -
The property of coil by which a counter e.m.f. is induced in it when the current through the coil changes is known as
The current coil of a wattmeter is connected to the CT of R-phase. The potential coil is connected across Y and B phases. The wattmeter measures